DNS CNAME redirected you too many times.

I am testing out something.
For this test i want to load in the site https://motorsport.junius.be/ but keep the domain as https://grandprixpixels.wout-junius.dev
I setup a CNAME record whit name grandprixpixels and content www.motorsport.junius.be.

Now as a result i get grandprixpixels.wout-junius.dev redirected you too many times..

In the network tab of dev tools i see it keeps redirecting to itself (https://grandprixpixels.wout-junius.dev)

Is this the way to do it?
What is going wrong?
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